Ehcache is an open source, standards-based cache that boosts performance, offloads your database, and simplifies scalability. It's the most widely-used Java-based cache because it's robust, proven, full-featured, and integrates with other popular libraries and frameworks. Ehcache scales from in-process caching, all the way to mixed in-process/out-of-process deployments with terabyte-sized caches.
The major new feature in this release is the ability to share resources between caches.
It requires Java 8+, and will be the last Ehcache release line to support Java 8.
As a reminder, Ehcache 3 introduced the following:Feature Manipulation Engine (FME) is the gold standard for data transformation. It features dedicated DWF readers and KML/KMZ writers. FME allows you to build automated workflows that handle coordinate reprojecting, attribute mapping, and 3D geometry conversions flawlessly. 3. CAD-to-GIS Intermediary Formats (The Manual Approach)
and antenna paths for infrastructure projects like fiber rollouts. Top Tools for DWF to KMZ Conversion
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Follow the prompts, selecting the object(s) to export, the coordinate system, and elevation, as shown in this YouTube video for DWG to KML . 2. Using GIS Software (QGIS) dwf to kmz
Global Mapper is renowned for handling dozens of formats, including DWF and KMZ.
Converting DWF to KMZ often requires a two-step process: converting DWF to a more universally supported CAD format (like DXF or DWG) and then converting that into KMZ, or using specialized CAD-to-GIS software. 1. Using Autodesk Civil 3D or AutoCAD (Best Approach)
Launch QGIS and ensure you have a DXF/DWG or vector importer plugin installed. Feature Manipulation Engine (FME) is the gold standard
Ensure the final output is in a vector format (like KML) that retains spatial data, not a raster image. Best Practices for DWF to KMZ Success
Click finish. The software will generate a KMZ file ready for Google Earth. Method 2: Using Automated GIS Spatial ETL Tools (FME)
The core reason for converting a DWF to KMZ is to give your CAD design a geographic context. CAD drawings often exist in their own coordinate space (e.g., arbitrary Cartesian coordinates), while GIS data is tied to the real world. This link or copies made by others cannot be deleted
The export wizard will guide you through selecting the objects to export, choosing whether to export text and materials, and specifying the output directory. The software automatically handles the transformation from your local coordinate system to the WGS84 system used by Google Earth. Method 2: Using GIS Software (ArcGIS Pro or QGIS)
If you just want to view the design in Google Earth and don't need vector data:
DWF files may use inches, millimeters, or feet. KMZ files strictly require metric measurements for geographic scaling. Failing to accurately scale the model during conversion results in massive distortion. Top Tools for Converting DWF to KMZ
The most precise way to convert your design assets is to work from the native CAD environment using Autodesk Civil 3D or AutoCAD Map 3D. Step 1: Assign a Coordinate System Before exporting, your CAD drawing must be georeferenced. Open your source drawing file in Civil 3D. Go to the window and click the Settings tab.
After conversion, the drawing appears at 0,0 coordinates (in the Atlantic Ocean off the coast of Africa), or it lands in the wrong city.